Excavating-shovel



J. W. PAGE. lEXCAVATING SHOVEL.

APPLlcATloN FILED MAR. u, 1919.

mamma4 Jan. 13,1920.

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v ExcAvATING-,SHOVEL specification@ Lettersrafent; f Patented Jan, 13, 1920,

.- Application filed "March 17, .1919. Serial No'.

To all whom t may concern: I Be it known that I, JOHNMW., PAGE, a citizen of the United States, residing at.

1326 Fargo avenue, Chicago, in the countyof Cook and State 'of Illinois, have invented a new and useful Improvement in Excavating-Shovels, of which the following is a specification.

My inventionV relates to certain new and .useful improvements in excavatingl shovels andis-fully described and explained in the specification and 'shown inthe accompanyinv drawings, in whichl *igure 1 is a side elevation of my improved device, Fi 2 is aV horizontal'section on the line -2 of Fig. 1 and Fig. 3 is a verti- 'cal section on the line 3 of Fig. 1.

Referring to drawings, .4 isl the body of the bucket, such as is well known inthe art', and is familiar to excavation engineers under the name of the Page bucket. The bucket is pivotally supported by, a bail 5, preferably of chain,- which is` in turn carried by a hoisting'rop'e 6. Q7 is the rear end of the loading line. 8 is' the characteristic holding line,forming`a part of whaty is now known as the Page hitch, theJ same running over a sheave 9 lbeing attached .to the frontl of the bucket. 10 is Ione of thetwo con-l tinuations yof the hauling line, also forming a part of the Page hitch, the two parts running, in accordance with common practice, to opposite edges of the front of the bucket.

Heretofore various expedients havebeen employed for securing the chains 10 to the bucket, and afgreat deal of annoyance; has

been occasioned by wear atthe point of attachment. The present invention illustrates a device which I have found affords a very simple and desirable means of attachment, and one which not only very largely' decreases wear, and makes replacement very much easier, but has other incidental results v whichwill hereinafter appear.

l1 is a plate of metal, doubled upon itself to embrace the vertical Aside wall of the bucket at the front edge, so as toleave a vertical' opening.v The front doubled orv curved edge of thismember 11 is provided with two or morehorizo'ntal slots. buckets only two slots need be used but in larger ones, such as are here illustrated, it is desirable to use three and'sometimes even more such slots to secure adjustment. At the rear end of the chain 10 is a clevis 13, each of whose ends is provided with an eye .14 adapted to enter one of thev slots 12. 15 1s a vertical pm, which is set` inside the curve .of the member 11', passes through the eyes of theA clevis and is heldin-place by a cross- By this construction a very -firm and substantial attachment-is secured for the chain 10. Owing. to the long bearing of the pin 15 in. the curve of the plate ,11, there is substantially no wear of the plate 11, but the wear falls on the eyesofv theclevis and the pin l5. Either or both of these parts can be replaced in a minute or two, practically without tools.' The clevis can be adjusted vertically to -modifythe digging edect if desired. n f

Aside from the obvious advantages arising from thesimplicity and durability of 4the attaching device, the cost of the bucket proper is considerably reduced by-this mechanism. It isy well `known that the digging characteristics of a Page bucket are determinedvery largelyby the distance forward and above theline of the cutting edge, at

which the point of attachment of the hitch lis located. I n the present device the clevis, of course, 'while capable of swinging on a verticalI pivot ina horizontal plane, cannot swing ma vertical p1ane,-'and therefore in determining the'dig'ging efliciency we do not consider the point at which the clevis is attached to the bucket, but on the'contrary, the point at .which the chain 10 engages the clevis. In other words, from the standpoint of digging efficiency, the clevis, might just as well be a rigid .'part of the bucket. The same efliciency is therefore produced as would be the case if the bucket -we're'made several inches longer, and in point of fact, with the use ofthe present device', the buckets are actually made several inches shorter on'the sides than heretofore, the forwardly extending clevis causing the digging to be done with equal efciency.

I realize that considerable variation is possible in the details of' 4the construction herein shown, ,an'd I do 'not intend to limit myself thereto, exceptv as pointed out in the following claims, inwhich it is my intention to claim all the novelty inherent in the device as broadly as is permitted by the state of the art.

What I claim asnew and desire to secure 1. An excavating shovel, having side walls, a plate r-Qurvedupon itself to form roc avv vertical loop shaped opening and embractached thereto, a4 vertical pin in the loop and having slots in their bentk portions, clevises provided 'with e es adapted to enter.

the slots and to be adjustable' in differentingthe forward edge of' a side wall and-at.-

and a clevis pivoted upon the pin and ladapted to receive a hauling line.

2. An excavating shovel, havingvertical side Walls,'plates re-curved upon themselves to form vertical loops and'embracing the side' walls at their forward edges and eyed clevises entering slots in the' bent portions of' said plates and pinspassed through thee es of the clevises to afford therefor ver-y tical pivots, the clevises being adapted'v tol receive a haulin line.A

3.. An eXcavatlng shov'eLV-having verticaly side Walls, plates re-curved upon themselves to` forni loops which embrace the side-Wall pairs of slots, pins adapted to lie in the loops of the plates and-engage the eyes of .the clevises to afford therefor vertical pivots,

the clevises being adapted to be engaged by a haulingline. f

4. In combination, an excavating shovel having vertical' side walls and hauling lines running to the side walls and clevises at the ends ofthe hauling' lines, of means'of connection between the clevises and theside walls including removable 'and replaceable pins having elongated vertical bearings upon the side walls whereby the wear between the pins and the permanent portions 0f the bucket is reducedto a minimum.

.l 5. In (xfnnbination',l an excavating shovel having 'vertical side walls and clevises by which the lbucket maybe dragged for di'gging .and means of connection betweenthe 'A of the side walls, and hauling means secured to the bucket by. forwardly extending attach uponvertical pivots, whereby the attaching means are rigid with the bucket ina vertical plane. l, 7. In combinatioman excavating shovel having vertical side walls and they cutting \edge cut back of the forward edges of the ing members pivoted to the bucket sidewalls f side wall, plates bent back upon themselves to form loops at their forward 'edges and embracing and secured to the forward edges of the side Walls and provided vwith slots in their-bent portions, clevises having horizontal eyes entering the slots and pins llying in the loops of the plates and engaging the -eyes of Athe clevises whereby the clevises areu rigid with the bucket in a vertical 'plane and having the'efect, in determining the digging angleof forward extensions of the side walls'.

In testimony "whereof I have hereunto set` my hand and seal this 14th day 0f March,A 1919.

JOHN ,PAGEL [L.S.] 

